一、研究背景近年来,河南省南阳市各级公安交通管理部门普遍采用电子警察监测系统(俗称电子眼、电子警察,以下简称监测系统)出具的计量数据和视频资料,对机动车交通违法行为进行监测,采集交通违法证据。这些警用计量器具的量值准确与否,直接关系到广大人民群众的生命财产安全和道路交通的通 I. Background In recent years, police traffic management departments at all levels in Nanyang City of Henan Province have generally adopted the measurement data and video materials issued by the electronic police surveillance system (commonly known as the electronic eye and the electronic police, hereinafter referred to as the monitoring system) for the traffic violations of motor vehicles Monitoring, collecting evidence of traffic violations. The accuracy of these police measurement instruments or not, is directly related to the masses of people’s lives and property safety and road traffic through